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Replace the verifier test for default trusted pointer semantics, which previously relied on BPF kfunc bpf_get_root_mem_cgroup(), with a new test utilizing dedicated BPF kfuncs defined within the bpf_testmod. bpf_get_root_mem_cgroup() was modified such that it again relies on KF_ACQUIRE semantics, therefore no longer making it a suitable candidate to test BPF verifier default trusted pointer semantics against. Link: https://lore.kernel.org/bpf/20260113083949.2502978-2-mattbobrowski@google.com Signed-off-by: Matt Bobrowski <mattbobrowski@google.com> Link: https://lore.kernel.org/r/20260120091630.3420452-1-mattbobrowski@google.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
30 lines
707 B
C
30 lines
707 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2026 Google LLC.
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*/
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#include <vmlinux.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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#include "bpf_misc.h"
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#include "../test_kmods/bpf_testmod_kfunc.h"
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SEC("syscall")
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__success __retval(0)
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int test_default_trusted_ptr(void *ctx)
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{
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struct prog_test_member *trusted_ptr;
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trusted_ptr = bpf_kfunc_get_default_trusted_ptr_test();
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/*
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* Test BPF kfunc bpf_get_default_trusted_ptr_test() returns a
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* PTR_TO_BTF_ID | PTR_TRUSTED, therefore it should be accepted when
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* passed to a BPF kfunc only accepting KF_TRUSTED_ARGS.
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*/
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bpf_kfunc_put_default_trusted_ptr_test(trusted_ptr);
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return 0;
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}
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char _license[] SEC("license") = "GPL";
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